Honda-SOHC
SOHC.co.uk Forums => CB500/550 => Topic started by: deltarider on May 20, 2023, 07:29:02 AM
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Partslist says: BAR B, HANDLE. PN: 99005-02000. What is it for? Is that 'B' maybe a misread '8' in an older document? Width is 8mm.
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Maybe spoke key .
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A tuning fork?
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There has been much discussion about that tool from tappet adjuster(too big) to spoke nipple key(bad fit) but basically its a tee bar for the plug socket
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If it is 8mm, then there are quite a few things it can fit as well....
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There has been much discussion about that tool...
I vaguely remember the discussion in the international forum and also that there was no definitive answer.
[...] from tappet adjuster(too big) to spoke nipple key(bad fit) but basically its a tee bar for the plug socket
Nope, it's too big for the holes in my OEM plug socket.
Question: did early CB500 models ever come with a brake bleeder 8mm head instead of the 7mm on ours?
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My CB500s need one, my 550F1 needs one, my 1978 550K does not. ?????
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Well whatever it is it must be very important as it is still put in some Honda tool kits. Its in nearly 500 different kits including quads. ;D
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What a wonderful question. I've often wondered the same. I doubt it's in there as a T for the plug socket, I always use the screwdriver attachment.
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Old Triumph toolkits have a tool almost exactly the same which is for tappet adjustment. It also has a tyre lever with a square cutout on one end which is for the wheel spokes.
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Obviously a plug socket bar, with 8mm jaws added on - probably to adjust the throttle cable adjuster barrel which is about the only 8mm piece on the bike. (talking CB750 in this case)
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Again... it's bigger than the holes in the plug socket.
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thats quite easy, its a spoke tool.
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It's a tappet adjuster tool for a 400/4.
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As far as the CB500/550s, there seems to be one place only where this tool fits perfectly and that is at the throttle cable adjusters.
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As far as the CB500/550s, there seems to be one place only where this tool fits perfectly and that is at the throttle cable adjusters.
That’s what I used mine for when tinkering about as it’s a good length for said twiddling manoeuvres 
Sent from my iPhone using Tapatalk
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Throttle cable adjusters are 10mm so if it fits there it will also fit the tappet adjusters, so that's a more likely use that Honda would have put it in the toolkit for.
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Throttle cable adjusters are 10mm... [...]
Mine are 8mm.
[...] ...so if it fits there it will also fit the tappet adjusters, so that's a more likely use that Honda would have put it in the toolkit for.
Really... in a CB500/550's toolkit? My tappet adjusters have 10mm locknuts.
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Throttle cable adjusters are 10mm... [...]
Mine are 8mm.
[...] ...so if it fits there it will also fit the tappet adjusters, so that's a more likely use that Honda would have put it in the toolkit for.
Really... in a CB500/550's toolkit? My tappet adjusters have 10mm locknuts.
Tappet adjuster lock nuts are smaller than 10mm on the 400/4, about 8mm if I remember correctly. That's why I think it is for a 400/4 tool kit and probably hundreds of other small Hondas.
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Fairly sure DR that genuine Honda throttle cables have 10mm nuts on them not 8mm ones. Just posted 2 today. Might be wrong of course but they looked 10mm to me.
8mm would be correct for 400/4 tappet locknuts, seem to recall they had those little square adjusters as well that you used that little tool on. Still got one of those lying in my toolbox. C50 used the same if I recall.
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Definitely the adjusters at the handlebars are 8mm.
The tool was in CB500 toolbags, looong time before the CB400F (or CB350F for that matter) arrived.
Another question: what was the WRENCH AXLE extra's eye about? https://www.cmsnl.com/products/wrench-axle_89202283000/ 26mm probably for the rear axle. Could the second one have been 23mm to advance the special cranknut (behind the ignition cover)?
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Definitely the adjusters at the handlebars are 8mm.
The tool was in CB500 toolbags, looong time before the CB400F (or CB350F for that matter) arrived.
Another question: what was the WRENCH AXLE extra's eye about? https://www.cmsnl.com/products/wrench-axle_89202283000/ 26mm probably for the rear axle. Could the second one have been 23mm to advance the special cranknut (behind the ignition cover)?
That tool was not included in the CB500/4 tool bag. Here is a photo of my owners handbook for a CB500/4, printed in 1971 and that part is not included.
[attachimg=1]
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That's a pic of an early model CB500, after 2034712 it was included in the toolkit and they ditched the double bar wrench.
I was referring to the adjusters near the carbs DR, AFAIK there is only one cable with the adjuster near the bars and that is indeed 8mm.
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beat me to it Ken! interestingly the later toolkit only has 2 spanners where the early one like Julies has 3, including a 8mm size, the later one only has 10x12 and 14x17 so maybe they included the 8mm on the bar to compensate?
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OK, one 8mm wrench was succeeded by another, so... the correct question - in general - should be: why did Honda think it necessary to supply an 8mm wrench in a CB500 toolkit?
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Dunno DR, not that many 8mm nuts on the 500.
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Tappet adjuster lock nuts are smaller than 10mm on the 400/4, about 8mm if I remember correctly. That's why I think it is for a 400/4 tool kit and probably hundreds of other small Hondas.
Tappet nuts on the 400 are 9 mm.
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You may well be right Rob, been 30 years or so since I last did tappets on a 400/4.
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I did them last week...and those of my 2 CBR's too, checked 40 valves, corrected just 2, all in all half an hours work :D
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Definitely the adjusters at the handlebars are 8mm.
The tool was in CB500 toolbags, looong time before the CB400F (or CB350F for that matter) arrived.
Another question: what was the WRENCH AXLE extra's eye about? https://www.cmsnl.com/products/wrench-axle_89202283000/ 26mm probably for the rear axle. Could the second one have been 23mm to advance the special cranknut (behind the ignition cover)?
That tool was not included in the CB500/4 tool bag. Here is a photo of my owners handbook for a CB500/4, printed in 1971 and that part is not included.
(Attachment Link)
Just bought a 26 mm socket for mine. I see these early 500s had that double hole wrench but it disappeared from later tool kits. Did later tool kits include a 26 mm wrench ( not the ones I’ve seen for sale ) or were Honda thinking you could undo with your teeth 🙂?
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Yes, they included what Honda called a 26mm eye wrench. I found a NOS ones earlier this year in Canada. Oddly, the 550F1 got the 26mm wrench but the F2 got a 22 and a 24mm eye wrenches.
Which is odd because according to CMS they use the same nut on the rear spindle, so something wrong there. The 550F toolkit I've recently bought had both the 22 and 24mm eye wrenches inside. Offhand I can't seem to recall where there's a 22mm nut on a 550.
https://www.cmsnl.com/honda-cb550f1-super-sport-550-four-1976-england_model17113/eye-wrench-26_9900626000/
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Whats the hex on the front wheel spindlr nut Ken, i just grab a spanner to fit
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I did think of that Bryan but I think it's 19mm. Might be wrong though, been a while since I fitted one.
Actually you may be right Bryan, just looked at the parts book and it could well be 22mm, appearances can deceive though.
Also spotted the 550F2 uses a different rear spindle nut from the F1, for some reason I was looking at the swinging arm spindle, CMS pics don't show the rear spindle clearly in the diagrams, wondered why it was a locknut and not a castellated nut.
This toolkit has been on Ebay for ages now, says 500/550 but TBH that's not strictly true, only the 500K3 got the 24mm rear nut and not exactly that many of those about and only the F2 and K3 got the 24mm nut in the 550s.
https://www.ebay.co.uk/itm/334828221614?hash=item4df55134ae:g:JD8AAOSwPyVkNS6R&amdata=enc%3AAQAIAAAA4PyCuZZ9GHQmO0W3e9Oj4uMUzkDRl%2BKRXkWo%2BnSdvwilFaBKtK8q1OVPxXztmk9YlA9Q8DZV1roPRF65Xfl%2BCFZnfHodxgYSwIaXkicZsJv%2B8UwS7lQjDyM%2BsjBwEC6ouIPkU8ZOhoEioNGPKLidO%2FEJ3eExzz2DeSGb0XUdyivswYXUHo7JywomMa%2BKWH9qt2xBHuOzLzHTEFfzGEhDEIfxIuHurOvfJL26U5c8Yfs96V8LQVUAdXi3sU2JJXp5szg1x7L6TDyeqxlljCmbZVmiZ5V%2FOcxsBLqRttKdnZVZ%7Ctkp%3ABk9SR9Di4ILVYg
One way of getting around the problem Dave would be to buy the 24mm nut fitted to the F2/K3 and then find a 24mm eye wrench which is FAR easier than trying to find the 26mm version.
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Just spotted this Dave.
https://www.ebay.co.uk/itm/325836619609?mkevt=1&mkpid=0&emsid=e11021.m43.l3160&mkcid=7&ch=osgood&euid=21ba1e8ad20b4b6da35841fb28f9be18&bu=43136868494&ut=RU&osub=-1%7E1&crd=20231005064135&segname=11021
Eye watering amount of money.
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Why do they have pliers - is there any routine maintenance that needs them? I think my zx6-r 1999 toolkit has them, so there must be a reason?
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Why do they have pliers - is there any routine maintenance that needs them? I think my zx6-r 1999 toolkit has them, so there must be a reason?
Removing the axle split pin?
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Pliers are very useful, removing stuff that's red hot, grabbing stuff that's sharp, like broken bulbs etc. Even stopping things from spinning whilst your trying to undo the nut etc.
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Why do they have pliers - is there any routine maintenance that needs them? I think my zx6-r 1999 toolkit has them, so there must be a reason?
They are for holding the one tiny nut when you fasten the opposite other one of the breakerpoints.
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Just spotted this Dave.
https://www.ebay.co.uk/itm/325836619609?mkevt=1&mkpid=0&emsid=e11021.m43.l3160&mkcid=7&ch=osgood&euid=21ba1e8ad20b4b6da35841fb28f9be18&bu=43136868494&ut=RU&osub=-1%7E1&crd=20231005064135&segname=11021
Eye watering amount of money.
Thanks Ken , Yes that’s a lot - especially since it would be pretty hard to use to loosen a correctly torqued axle nut. Will stick to my 26mm socket which can be used with a torque wrench.
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The 26mm eye wrench though Dave is meant to be carried on the bike at all times, for emergency repairs etc, like fixing a puncture.
Until I found a genuine one I intended to put this in the tool kit.
https://www.ebay.co.uk/itm/256144332288?hash=item3ba3645600:g:PUAAAOSwKptcgXw3&amdata=enc%3AAQAIAAAA8ChxH%2FHkuQBMYpwLA991qUAVNm9dtlm6C5vI6QP9ReBV1dwUOF3wAf42dkhpipgBwcENPHePIUuHYw%2BB9OVclUrMh1dneAKBCZHIbwH8vRGPrm%2BAPtUr%2FXTJZsKZXrVxzA7MauTcqC6Jwi2Fdptd5lVcv1yf8FodgAmvb8PbeMbV0S5jBRiv6LGjeKXcQalRzOftWZxYDV6TrRRH1Crv1qcdxBDgDsV4b5I42lwMET%2BAKD43InJBQLXQf05bperinXVDxi%2FXH12mAIaaoubiUKr2kcuSZzGOLb%2FplOCBDBQJxq2zJ6iQOir7IdrLmfzPxw%3D%3D%7Ctkp%3ABk9SR4bT0NDgYg
Not exactly ideal but it would have done the job.